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Better Understanding of Todays Track Lengths

Discussion in 'General Yamaha Discussion' started by Port-Parts, Apr 2, 2016.

  1. Port-Parts

    Port-Parts Advertiser Advertiser VIP Member

    Messages:
    1,013
    Location:
    Port Washington Wi
    Country:
    USA
    Snowmobile:
    2012 Nytro RTX
    2018 Sidewinder BTX SE
    With the release of the new Sidewinder models and the huge amount of interest in them it seems we have been getting alot of customers upgrading from older models and alot of consumers are having a hard time deciding on what track length to choose as they are only familiar with the 121/136/144 era of tracks. The newer models like Viper and Sidewinder are using 129/137/141/146/153/162 length tracks which most customers immediately notice are longer then what they were previously riding and assume due to length won't corner as good as what they have been riding but what they usually overlook is the fact that they use a different drive pitch (distance between the lugs) on the newer sleds which actually helps cornering by having less lugs on the ground when compared to the previous generation of track lengths.

    What I have found that can help customers understand what may fit there needs better and make a more comparable comparision to whatever they have been riding previously is to do the math on how many actual lugs each track has and how many are on the ground at any given time which varies by model due to actual skid length/approach angle of track but a fairly accurate way to tell how many are on the ground at a time is to take the length of the hyfax (slides) and divide it by the drive pitch . Below are some of my findings.
     
    snobill, Terminator, maxdlx and 3 others like this.
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  3. Port-Parts

    Port-Parts Advertiser Advertiser VIP Member

    Messages:
    1,013
    Location:
    Port Washington Wi
    Country:
    USA
    Snowmobile:
    2012 Nytro RTX
    2018 Sidewinder BTX SE
    121/136/144 tracks using 2.52" drive pitch (2006-2015 Apex/Vector/Nytro/Phazer)

    121” - 48 total rows of lugs – 16.86 lugs on ground

    128” – 51 total rows of lugs – 17.85 lugs on ground

    136” - 54 total rows of lugs - 19.87 lugs on ground

    144” - 57 total rows of lugs – 22.62 lugs on ground

    129/137/146 tracks using 2.86" drive pitch (2016 Apex/Vector/SRViper/Sidewinder)

    129” (Apex/Vector/SW/SRV RTX)- 45 total rows of lugs – 15.73 lugs on ground

    137” (LTX)- 48 total rows of lugs – 16.78 lugs on ground

    146” (Apex/Vector XTX or STX) - 51 rows of lugs – 19.93 lugs on ground

    141/153/162 tracks using 3.0" drive pitch (SRViper/Sidwinder)

    141” (XTX)- 47 total rows of lugs – 16.66 lugs on ground

    153” (BTX) - 51 total rows of lugs

    162” (MTX) - 54 total rows of lugs
     
  4. Port-Parts

    Port-Parts Advertiser Advertiser VIP Member

    Messages:
    1,013
    Location:
    Port Washington Wi
    Country:
    USA
    Snowmobile:
    2012 Nytro RTX
    2018 Sidewinder BTX SE
    As you can see some of the longer sleds (137”/141) actually have a similar amount of lugs on the ground (17) as the older generation of 121” sleds had which is the reason the 137” sleds are slowly becoming the new standard for trail sleds and why the 141 XTX models make awesome crossover sleds retaining great trail manners. Another notable tidbit I notice is that the newer 141” and 146” sleds when compared to the 144” (Nytro/Apex) have quite a few less lugs on the ground (16.66-19.93 vs 22.62) – could be some of the reason they have went away from the tipped up rail designs. Another one that stands out to me is the new BTX models have a total of 51 rows of lugs around the track – kinda crazy to think a 136” track has 54 total rows of lugs – the new BTX models should definitely have some trail manners for a very capable off-trail type sled.
     
    Last edited: Apr 2, 2016
    snobill, NOS-PRO, murdered137 and 6 others like this.
  5. VX1R

    VX1R Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    855
    Location:
    Inver Grove Heights, MN
    Country:
    USA
    Snowmobile:
    2017 SideWinder LTX-LE Red
    2018 SideWinder LTX-LE Blue
    Vintage: 300 Inviter/1980 300 Enticer
    1984 SS440/1996 Phazer Mt. Lite
    That's some great information Kevin. Thanks for taking the time to do the math and post it for everyone. This information should really help in deciding what track/skid length is best for them. ;)!
     
    farmerschiferl likes this.
  6. RTX

    RTX TY 4 Stroke God

    Messages:
    1,695
    Location:
    massachusetts / maine
    Country:
    USA
    Snowmobile:
    2014 viper rtx
    2006 apex rtx
    Umm. Wow.
    Thank you for posting that. I never knew the depth of information involved in track sizes.
    Very informative and it realy does give you a clearer look at what is going on vs just knowing the length of the track.

    Can we get this linked in the faq area please???
     
    yamakazie, rlbock and cannondale27 like this.
  7. Gone Blue

    Gone Blue VIP Member VIP Member

    Messages:
    1,415
    Location:
    Fenton, Michigan
    Country:
    USA
    Snowmobile:
    08' Nytro RTX 40th Anniversary - Stretched
    Thanks Kevin for the awesome post! G.B.
     
  8. yamadoo

    yamadoo Yamadoo is a snowmobile ' aholic'. Lifetime VIP Member VIP Member

    Messages:
    2,898
    Location:
    SE MN
    Country:
    USA
    Snowmobile:
    15 Viper STX DX red/white
    13 Apex XTX 45 anniversary RED/WHITE/BLACK
    10 Vector LTX Blue
    10 vector GT- White 10,000miles for sale
    11 Venture Gt
    GREAT info.
    Also the new front ends with rider forward have much better balance. I think my 141 viper is quicker to turn than my Apex 121was.
     
  9. snowbeast

    snowbeast TY 4 Stroke God

    Messages:
    4,705
    Location:
    E waterboro,maine
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    Snowmobile:
    2015 apex xtx traded for a 2017 sidewinder L-tx-le
    FACEBOOK:
    yes
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    yes
    Yes,thanks kevin,so now my 137 ltx will corner right there with my boys older apex 121's,nice..
     
  10. stevewithOCD

    stevewithOCD Beerman Wannabe Lifetime VIP Member

    Messages:
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    live in CT sled in Millinocket MAINE
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    Snowmobile:
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    AWSOME INFO! I wanna go to Wisconsin and give you a hug. Is that wrong? I've been wrangling this 129' to 137" for weeks now. Now i'm convinced and feeling' good about it...P.S: you can hug a dude as long as he's on a Yamaha
     
  11. Sledroll

    Sledroll TY 4 Stroke Junkie

    Messages:
    577
    Location:
    Muskoka , Ontario
    Country:
    Canada
    Snowmobile:
    2015 Apex XTX
    2017 SW LTX LE
    maybe after reading that track info , those guys who are thinking about a 129 or a 137, should think 137 or 141??
     
  12. cannondale27

    cannondale27 Moderator Staff Member Moderator Vendor Lifetime VIP Member VIP Member

    Messages:
    15,790
    Location:
    Manitowoc,WI
    Just dont forget the approach angle. 129 vs 137 Viper the approach is much sharper bend at front of 129". Would be a interesting measurement to add to this great info. Just saying it because I do not see the difference the extra length has as being a advantage off the line in real life. Too many variables though.
     
    RJH likes this.
  13. Terminator

    Terminator Expert

    Messages:
    319
    Location:
    Atkinson, NH
    Nice comparison, thanks!
     
  14. stevewithOCD

    stevewithOCD Beerman Wannabe Lifetime VIP Member

    Messages:
    1,846
    Location:
    live in CT sled in Millinocket MAINE
    Country:
    USA
    Snowmobile:
    2017 Sidewinder LTX-LE
    Does this mean in theory the 137" will have a better top end angle?
     
  15. stevewithOCD

    stevewithOCD Beerman Wannabe Lifetime VIP Member

    Messages:
    1,846
    Location:
    live in CT sled in Millinocket MAINE
    Country:
    USA
    Snowmobile:
    2017 Sidewinder LTX-LE
    My dilemma was this. For MY riding style on MY trails with MY set-up on MY sled, I found the 128'' Ice-Ripper absolutely PERFECT. I stress MY a lot because I know 20 guys are going to chime in about studs or XTX bridges bumps better. That said, with more HP on different chassis I was very unsure what to do. I spoke in length to friend who has 8000 RR with 129'' & studs down middle. His opinion was the 129'' was enough, but with more HP & no studs, he wasn't sure. He also wondered if i'd start to push in corners. SO, back to square 1. Now that Kevin says i will have same amount of lugs on ground with a 137'' so turning shouldn't be noticeably harder, my decision is made. 137...and a new trailer to fit it...
     
    rlbock likes this.
  16. Redbeard

    Redbeard Formerly Northernsledder Lifetime VIP Member VIP Member

    Messages:
    1,550
    Location:
    IN
    Country:
    USA
    Snowmobile:
    2012 Apex 136 M20
    2008 Vector 136 M20
    2004 RX Warrior
    1995 Vmax 4 800
    1995 Vmax 600 LE
    1995 Ovation 340 LE
    Great information!

    It's posts like this that make TY such a valuable resource!
     
    Agman 57, 5valve and Snowaddict like this.

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